Approximately how long does energy take to travel from the core to the surface of the Sun?
A. 10 billion years
B. 16 million years
C. a few seconds
D. a few minutes
E. a thousand years
Answer: B
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Which planets have a rocky, relatively dense composition?
a. Jupiter, Saturn, Earth, and Mars b. Uranus, Neptune, Earth, and Mars c. Jupiter, Saturn, Uranus, and Neptune d. Mercury, Venus, Earth, and Mars
The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is
a. 31.3 m b. 3.13 m c. 0.313 m d. 0.0313 m e. none of the above
_________is the removal of material in a specific area of a part by using electrochemical techniques.
Fill in the blank(s) with the appropriate word(s).
A planet orbiting the Sun has speed v = ?(GM/d). Escape speed from the Sun is v = ?v(2GM/d), where G is the gravitational constant, M is Sun's mass, and d is the distance from the Sun
Noting that this tells us that escape speed is ?2 times orbital speed, which planet would fly out of the solar system by a 1.5 increase in orbital speed? A) Mercury. B) Venus. C) Earth. D) all of the above E) none of the above